I would strongly recommend against using a confusion wheel to visualize your confusion matrix. As impressive and fancy as they look, confusion wheels are visually complicated and unintuitive to read. Good data visualizations summarize information in a way that is simple, clear, and intuitive. Confusion wheels have none of those properties.
Unfortunately, there really isn't a great way to visualize a large confusion matrix. The best ones I've seen are a grid-based plot with either color-coding or size-coding representing the value in each table cell. Funnily enough, the visualization in Fig. 1(a) of the link you included is significantly easier to read and more informative than the confusion wheel in Fig 1(b). A grid graph like the one in the link's Fig. 1(a) is what I would recommend.